Hoppscotch is an open-source API development ecosystem. It helps you create your requests faster, saving you precious time on your development.



There are many alternatives to Postman as a web app if you are looking for a replacement. The best Online alternative is Hoppscotch, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Postman and many of them are available as a web app so hopefully you can find a suitable replacement. Other interesting Online alternatives to Postman are Requestly, Stoplight, Restfox and API Astrolab.
Hoppscotch is an open-source API development ecosystem. It helps you create your requests faster, saving you precious time on your development.



Requestly is a lightweight proxy available as a browser extension & desktop app to intercept & modify network requests. Using Requestly you can Modify Headers, Redirect Url, Mock API response, Delay/Throttle requests, etc.




Stoplight is an API Design, Development, and Documentation platform that enables consistency, reusability, and quality, all with an easy, enjoyable developer experience.





The API Astrolab enables today’s API-first companies to show their API products in a visual way so that anyone can understand how they work.



Design and debug APIs in a powerful visual editor. Describe and debug easily with JSON Schema support. Apidog is a complete set of tools that connects the entire API lifecycle, helping R&D teams implement best practices for API Design-first development.




Treblle is a federated API Intelligence platform delivering full API visibility, security, and control from one integration point.



All the user-friendliness of our Terminal version, now wrapped up in a sleek graphical interface.



Firecamp's GraphQL playground is all in one GraphQL debugging tool which let you debug, collaborate and document your GraphQL APIs within a team for all platform.



API integration platform for testing, prototyping, and running of any API flow. The right tool for successful API flow integration - nice, easy, simple, and cheap.


RestCase is a security-focused API development platform that enables its users to rapidly create secure microservices, mock them in order to start testing, monitor APIs and collaborate on their development and testing.


EchoAPI is an all-in-one API development collaboration platform that offers essential features like API debugging, design, automated testing, stress testing, and documentation generation.
Completely free, no account needed for anything, can be used on browser and even offers proxy